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            <span class="bold">
              <strong>I can't compile and run
                multithreaded applications.</strong>
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            <p> 
                Special compile-time flags are required when
                compiling threaded applications on FreeBSD. If you are
                compiling a threaded application, you must compile
                with the _THREAD_SAFE and -pthread flags: 
            </p>
            <pre class="programlisting">cc -D_THREAD_SAFE -pthread ...</pre>
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                The Berkeley DB library will automatically build
                with the correct options.
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              <strong>I see fsync and close system call
                failures when accessing databases or log files on
                NFS-mounted filesystems.</strong>
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            <p> 
                Some FreeBSD releases are known to return ENOLCK
                from fsync and close calls on NFS-mounted filesystems,
                even though the call has succeeded. The Berkeley DB
                code should be modified to ignore ENOLCK errors, or no
                Berkeley DB files should be placed on NFS-mounted
                filesystems on these systems.
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